Updated openstack/openstack
Project: openstack-dev/pbr  2c083424c96bf3b4ac1d5d8bd5dda3db9478b476
null
Support building wheels (PEP-427)

With that, building and uploading wheels to PyPI is only one "python
setup.py bdist_wheel" away.

Change-Id: Idfc291f496a81498df6408f189854f49eca496d3